Mechanism for operating screw machines and the like



Oct. 16,1928. 1,688,197

G. J. MAYER ACHINES AND THE LIKE MECHANISM FOR OPERATING SCREW M Filed June 26, 1925 fay/"Zed ffiyer, Im/ ntor.

Patented @ch 16, 1928.

UNITED 51? OFFICE.

GODFRI-ED J; V MAYER, 0F BUFFALO; NEW YoRK'.

iiiventioiiuelete'sto screw machines, and more paiti'culeflyte mechanism for opef' acme the h Screw machines"invariably are provided with ehuck-operatinfi of coinbinecl chuele operating and' stoelefeecllhg' le'veis and with slide or eut off levers, thefirStnioveble-horizontallgi through an arc of at eifele and the second verticallythrough eh me of a en'ele Both l'eVers are invariably operated with the left hand, clue to the feel that the right i i'equii e'tl to operate the turret: Considerabletime is consumed and waste effort employed" in so menipuliting a 'serelvnieehiiie; and eonsequen'tly the niaehinee'anl'iot beoperated to I The object of inyinl entiohie-to provide a n'uie'hihe inwhi'cli provi'sioiiis mede'fer o en uting both levers witl'iout inevingthe hand of the: o'peifator 0H1 'one'leviei totheothei' and so that the right haiitl will always be mew operate the turret, oi foiuse' in any other manner, v e

Another obj ect of ii'ijl invention isto ro: vicle an operating oonn'eetioh between the two lGX GT'S, and to operatei one ffom the other.

A still further object of my intenuen is to rovide a eonneetion between thetwo levers so that one they operate independent of the other, undfwhen operatetl ine' e'ei'ta'in mainner will'ceiuse operation of Said other lev'ei'.

A still further object of my invehtioiiiislh provide means for operating the chuelc and feecliugjstock and for operating the Slide 01'' cut-oi? from a single point 7 A still further object of invention is to provide at connection between the slide or cut joii lever and the stoelefeedingand chuck opeiating mechanism whereby the operator;

upon grasping the slide or eut-oll'levei; will; be able to teed stock, operate the chuck; and" operate the tool post slide Grout-off; with said slide or cut-oil lever.

A still further object ofniyinvent ieiris to pifovicle in a screw machine; a slihe or outoil'*le* er and arrange the seine fol" movenient in planes at an angle to ezlc'li other zincl to provide connection" between s'eii'cl slide or cut-oil lever and the stoclefeecling and chuckopei'atiiig mechanism so that the will be operated upon movement of seidslitle oi" cutoff lever in one 'clirectioih ancl so that the slide or cut-oil only will be ope ated upon movement said last-mentioned lever in a second direction. I A

W ith the above, and other objects in View Serial-i ire. $93735.

to appear hei eine-fter the intention consists in the 1io\*el;features of construction and in the arrangement and ooi'nbiimtion of parts to be heieiiiziftei ClGSCl'll)tl-iLi1Ll more particularly pointed out in the subjoined claims.

lfi the'cl'i'ewing's Fig; l is it perspective View of a portionof a screw maehlne;

Fig 2 a seetienal e l plan view of tlie'same with parts omitted;

Fig: 3 is atransverse section takenv on line F 1g; l isen enlarged seetion taken on line F g. 5 s an enlarged longitudinal section taken on line 55, Fig 2;

The sole machine shown iso'ne of many liil ei' 'ent inltli'es of nihtlllins of this type now in use,-wl1e1'ein' a horizontally or eub stzintiullv horizont-ally-swinging lever is employed for feeding stoek and for operating the chuck to holcl thestoek fed therethrough and Wh'e1e-' in also a vertically-swinging leveris 6111- ployeel to operate the cut-off, which inol'ucles the tool aest slide of then'iaehine;

In the clrew'vinggb designates the bed of the ma'ohine'having legs? integriil' therewith for supporting the bed and parts mounted thereon; zln'tl" Sis a pun-like Bible with which meehin'es of't'his type ii-e usually equipped;

The-bee of the hieehine hes integral there- Wllill lieecl' stoelb 9;;which includes the front andteai' spincllebezuings 10'ancl, is commonin n iieh'ines of this type, the spindle through w-hi'eh stock 11' is fed isjoui'naled in said bearings and the chuck 12 secured to seitl spindle; The spindle has mounted thereon the usual cone pulley 13; Suitable Steele-feeding and ehuek operuting ineehz'inisln l liepi'oti'elecl; which, when actuated, opei altes the" chuck and feeds the stock seicl slide'inieniber is a transversely movable tool-post elicle 16' heviiigthe tool post 1'? thereon, and a suitable tool 18 fastened therein for operating upon the stock fed through and extending from the chuck.

The tool-post slide is provided with a gear rack, and as well known, a rock-shaft is journaled in bearings onthe' slide member on which is suitably secured a gear segment 19 meshing with the gear rack on the tool-post slide. 111 some machines other mechanical elements are employed to serve the purpose of the rack and segment arrangement referred to, but my invention is adaptable to machines of various makes.

20 designates the slide or cut-01f lever also secured to said rock-shaft, and as one adaptation of my invention. This lever may be said to be articulated, since it comprises an inner part 21 and an outer part 22 pivotally connected to said inner part, the pivot being such that upon moving the outer part in a vertlcal plane the inner part will move with thesame and operate the gear segment, which in turn will move the tool-post slide to the desired position and feed the same to, into, or through the stock, as the case may be. The pivotal connection of the two parts of this lever is such that the outer part may swing through an arc of a circle in a substantially horizontal direction without moving the inner part of said lever. The movement of the lever in a vertical direction is indicated by full and dotted lines in Fig. 8, while the movement of the lever in a horizontal direction, or in a longitudinal direction when considered with reference to the complete machine, is indicated by dotted lines in Fig. 2.

- 23 designates the stock-feeding and chuckoperating lever, and in this instance said lever is shown'as pivotally secured to the head stock of the machine at 24. Pivotally connected to this lever at a point a slight distance from its pivot, is a link 25, one end of which is pivotal'ly connected to said lever andthe other end to a longitudinally-movable element 26 forming part of the stock-feeding and chuckoperating mechanism.

A connection is provided between theslide or cut-off lever 20 and the stock-feeding and chuck-operating lever 23, and this connection is preferably in theform of a rod 27 constructed in two sections 28, 29, adjacent ends of the section beingoppositely threaded and having a turn buckle 30 threadedthereon so that the rod may be lengthened or shortened, as maybe required.

This rod is flexibly connected with the two 1 levers 20 and 23, and preferably each of these levers has a clamp 3l'fastened thereto, which may bepositioned at any desired point along the length of the lever to which it is applied. Each of these clamps is provided with a stud 32 terminating in a 13211133,. and the ends of the connector rod are provided with sockets 84 into which the balls of said studs are en tered, a screw plug 35 being threaded into ach end of the rod to retain the rod on said studs While permitting movement of the slide or cut-ofi' lever 20 in one direction without the stock in proper position. w

It will be understood that in operating a "machine equipped with my invention, it is simply necessary to grasp the slide or cut-0t I lever 20 with the left hand, move said lever from the posltion shown in full lines in Fig.

2 to that shown in dotted lines. This will cause the stock-feeding and chuck-operating lever 23 to be moved from the position shown in full lines in Fig.2 to that shown in dotted lines, whereupon the chuck will have been opened and'the stock fed through the chuck to the desired extent; and upon moving said lever 23 from the dotted position shown in Fig. 2 to that shown in full lines in said figure, the chuckwill become closed and grip the stock so that it will be rotated with the spindle and be ready to be operated upon by the tool fastened in the tool-post for the pur pose. The slide or cut-ofi' lever 20 may then be swung from the position shown in full lines in Fig. 3 to that shown in dotted lines, or approximatelyso, which will cause the tool-post slide 16 to be moved onthe slide member 15 of the cut-off mechanism to bring the tool in position against the stock, and by gradually. feeding the tool forward, the desired operation will take place.

It is of course understood that the tool-post I slide may have two tool posts, one operating to produce a desired effect on the stock without severing any portion thereof, and the other may be used for cutting'oli" the stock so that movement of the slide ,or cut-0E lever 20 inone direction will bring one tool against the stock, and .movement thereoi in the other 2 direction will bring a cut-ofl' tool in contact with the stock to severthe portion of the stock operated upon from the portion extend ing throughthe spindleoifthe machine.

In the drawings,- only one tool post is shown, but it is of course understood that at times two tool posts will be used, all of which will be understood by those familiar with the art.

When a'single tool post is used on the tool 2 post slide, the tool therein may be used for shaping or otherwise machining stock to de sired form and also to cut oil stock; therefore in the claims the term cut-off lever is not to be construed 1n a restrictive sense, since it operates the tool post slide and consequently mayserve for various purposes.

75 ing mechanism for feeding the stock through the chuck and for operating the chuck to hold It will be apparent from the foregoing that the two operating levers of a screw machine are operatively connected together, and that one of the said levers, or at least a portion thereof, may be moved in one direction to cause operation of the other lever, or it may be moved in another direction independent 01 said other lever and without causing movement of the latter; also that the connection between said levers may be lengthened or shortened and that the points of attachment of said connection to either or both levers may be changed so that the movements of said levers may be varied to produce the desired P results.

The construction and arrangement of parts shown and described is merely representative of my invention, and manifestly, these may be varied without departing from the spirit of my invention or sacrificing any of the advantages thereof;

Having thus described my invention, what I claim is 1. In a screw-machine or the like having two operating parts, two operating levers separately operable for manipulating said operating parts, and a rigid connection between said operating levers having universal and adjustable connection with and along said levers.

2. In a screw-machine or the like, a cutoff lever movable bodily in one direction and having part thereof movable separately in another direction, a second operating lever functioning for a purpose different from said cut-oil lever, and connection between said second operating lever and the separately movable part of said ciitbfilever.

3. In a screw-machine or the like, a cut-off lever bodily movable and having a part thereof separately movable, a second lever tune tioning for a purpose different from said cut on lever, and means of connection between the separately movable part of said cut-oli lever and said second lever for operating the latter from said separately movable part.

4. In a screw-machine or the like, a cutoil lever having an ellective movement tor operating cut-off mechanism and an ineil'ect-ive movement independently of said cut-oil mechanism, an operating lever spaced from said cut-off lever and functioning for a purpose difi'erent from said cut-oil lever, and connection between said two levers operable from said cut-off lever only during the ineffective movement of the latter.

5. A screw-machine or the like having a cut-ofi' lever vertically movable bodily through an arc of a circle to operate cut-on mechanism and having a part thereof movable separately through an arc of a circle at an angle to the bodily movement of said lever, a chuck operating lever movable through an arc of a circle at'an angle to the bodily movement of said cut-oii lever, and a rod having universal connection at opposite ends with the separately movable part of said cut-oil lever and said chuck-operating lever.

,6. A screw-machine or the like having a cut-oil lever bodily movable to operate cutoti mechanism and provided with a separately movable part, a second operating lever functioning for a purpose diilerent from said cut-off lever, a connecting rod connecting said levers, and means for changing the point of connection 01' said rod to one of said levers.

7. A screw-machine or the like having a cut-oft lever bodily movable to operate cut oil mechanism, a second operating lever functioning for a purpose difierent from said cutoff lever, and a connecting rod connecting said levers and being universally and adjustably connected with said levers.

8. In a screw machine or the like having two operating parts, two operating levers for manipulating said operating parts, and a rigid connection between said operating levers having a universal and adjustable connection at one end with and along one of said operating levers.

In testimony whereof I aiiix my signature.

GODFRIED J. MAYER. 

